Break-up and seafloor spreading domains in the NE Atlantic
An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely...
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Geological Society of London
2017
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ftqueensland:oai:eprints.qut.edu.au:231560 2024-05-19T07:40:03+00:00 Break-up and seafloor spreading domains in the NE Atlantic Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S. Blischke, Anett 2017 application/pdf https://eprints.qut.edu.au/231560/ unknown Geological Society of London https://eprints.qut.edu.au/231560/1/11.full.pdf doi:10.1144/SP447.12 Gaina, Carmen, Nasuti, Aziz, Kimbell, Geoffrey S., & Blischke, Anett (2017) Break-up and seafloor spreading domains in the NE Atlantic. Geological Society Special Publication, 447(1), pp. 393-417. https://eprints.qut.edu.au/231560/ free_to_read http://creativecommons.org/licenses/by/4.0/ 2017 The Author(s). This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au Geological Society Special Publication Contribution to Journal 2017 ftqueensland https://doi.org/10.1144/SP447.12 2024-04-30T23:59:52Z An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely to the previous rifting trend in the north, probably due to the proximity of the Iceland plume at 57-54 Ma. The new oceanic lithosphere age grid is based on 30 isochrons (C) from C24n old (53.93 Ma) to C1n old (0.78 Ma), and documents ridge reorganizations in the SE Lofoten Basin, the Jan Mayen Fracture Zone region, in Iceland and offshore Faroe Islands. Updated continent-ocean boundaries, including the Jan Mayen microcontinent, and detailed kinematics of the Eocene- Present Greenland-Eurasia relative motions are included in this model. Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These events caused seafloor spreading changes in the neighbouring Labrador Sea and a decrease in spreading rates in the NE Atlantic. Boundaries between major oceanic crustal domains were formed when the European Plate changed its absolute motion direction, probably caused by successive adjustments along its southern boundary. Article in Journal/Newspaper Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten Queensland University of Technology: QUT ePrints Geological Society, London, Special Publications 447 1 393 417 |
institution |
Open Polar |
collection |
Queensland University of Technology: QUT ePrints |
op_collection_id |
ftqueensland |
language |
unknown |
description |
An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely to the previous rifting trend in the north, probably due to the proximity of the Iceland plume at 57-54 Ma. The new oceanic lithosphere age grid is based on 30 isochrons (C) from C24n old (53.93 Ma) to C1n old (0.78 Ma), and documents ridge reorganizations in the SE Lofoten Basin, the Jan Mayen Fracture Zone region, in Iceland and offshore Faroe Islands. Updated continent-ocean boundaries, including the Jan Mayen microcontinent, and detailed kinematics of the Eocene- Present Greenland-Eurasia relative motions are included in this model. Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These events caused seafloor spreading changes in the neighbouring Labrador Sea and a decrease in spreading rates in the NE Atlantic. Boundaries between major oceanic crustal domains were formed when the European Plate changed its absolute motion direction, probably caused by successive adjustments along its southern boundary. |
format |
Article in Journal/Newspaper |
author |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S. Blischke, Anett |
spellingShingle |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S. Blischke, Anett Break-up and seafloor spreading domains in the NE Atlantic |
author_facet |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S. Blischke, Anett |
author_sort |
Gaina, Carmen |
title |
Break-up and seafloor spreading domains in the NE Atlantic |
title_short |
Break-up and seafloor spreading domains in the NE Atlantic |
title_full |
Break-up and seafloor spreading domains in the NE Atlantic |
title_fullStr |
Break-up and seafloor spreading domains in the NE Atlantic |
title_full_unstemmed |
Break-up and seafloor spreading domains in the NE Atlantic |
title_sort |
break-up and seafloor spreading domains in the ne atlantic |
publisher |
Geological Society of London |
publishDate |
2017 |
url |
https://eprints.qut.edu.au/231560/ |
genre |
Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten |
genre_facet |
Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten |
op_source |
Geological Society Special Publication |
op_relation |
https://eprints.qut.edu.au/231560/1/11.full.pdf doi:10.1144/SP447.12 Gaina, Carmen, Nasuti, Aziz, Kimbell, Geoffrey S., & Blischke, Anett (2017) Break-up and seafloor spreading domains in the NE Atlantic. Geological Society Special Publication, 447(1), pp. 393-417. https://eprints.qut.edu.au/231560/ |
op_rights |
free_to_read http://creativecommons.org/licenses/by/4.0/ 2017 The Author(s). This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
op_doi |
https://doi.org/10.1144/SP447.12 |
container_title |
Geological Society, London, Special Publications |
container_volume |
447 |
container_issue |
1 |
container_start_page |
393 |
op_container_end_page |
417 |
_version_ |
1799479622397591552 |